-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 WASvAUb/Q//4/x1WSaLG2ZUepmlH8VwawSzA7pgpuswlVKUzNBmOg7ZQ6nvaRI79
 2AoMgrCCj35+6IZ1pBD+Mg==

<SEC-DOCUMENT>0001411279-07-000001.txt : 20070904
<SEC-HEADER>0001411279-07-000001.hdr.sgml : 20070903
<ACCEPTANCE-DATETIME>20070904152838
ACCESSION NUMBER:		0001411279-07-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070831
FILED AS OF DATE:		20070904
DATE AS OF CHANGE:		20070904

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERPHASE CORP
		CENTRAL INDEX KEY:			0000728249
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				751549797
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		13800 SENLAC DR
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75234
		BUSINESS PHONE:		2146545000

	MAIL ADDRESS:	
		STREET 1:		13800 SENLAC DR
		STREET 2:		13800 SENLAC DR
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75234

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DEVINNEY MARC E
		CENTRAL INDEX KEY:			0001411279

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13071
		FILM NUMBER:		071096909

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		214-654-5000

	MAIL ADDRESS:	
		STREET 1:		2901 NORTH DALLAS PARKWAY, SUITE 200
		CITY:			PLANO
		STATE:			TX
		ZIP:			75093
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-08-31</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000728249</issuerCik>
        <issuerName>INTERPHASE CORP</issuerName>
        <issuerTradingSymbol>INPH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001411279</rptOwnerCik>
            <rptOwnerName>DEVINNEY MARC E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2901 NORTH DALLAS PARKWAY, SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PLANO</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75093</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President of Engineering</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Marc E. DeVinney</signatureName>
        <signatureDate>2007-09-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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